Grain sifter



P" 1927' A. MIRONUCK GRAIN SIFTER F iled Nov. 21, 1923 Patented Apr. 5, i922.

GRAIN srrrnn.

Application filedNovember 21, 1923,

This invention relates generally to a cleaner or sifter for grains or other com minuted material, the invention having for an object to provide a novel machine of this type characterized by efficient operation and adjustability to meet varying conditions,-

particularly adapted for use in, sifting .lighter material my improved -machine being from heavier, such as the cockle seeds which become mixed with the wheat. For further comprehension ofthe invention, and of the objects and advantages .thereof,referencewill be had to the follow- 7 mg description and accompanymg drawings,

and to the. appended claims in which .the various novel features of the invention are more particularly set forth. 7

Fig. 1 of the drawings is a central longi tudinal vertical sectional view showing my improved cleaner. V V

Fig. 2 is atransverse sectional view thereof taken on the line 22 of Fig. 1.

3 is a detail side View of the adjustto the screen. t e v Fig. 1 is a face-view thereof. 1 I As here embodied my improved sifter and cleaner comprises a rotary cylindrical mem ablecain for imparting reciprocating motion ber 10 composed of sheet metal having outwardly projected indentations 11 of suitable.

size spaced over all but the rear portion thereof, the rear portion of the member being in the form of a'wireme'sh element 10. The member 10 is slightly inclined to the horizontal, the'raised end being termed the forward end, this forward. end being supported on an enclosing anti-friction bearing 12, carried by a standard 13. The lower end of this member 10 is supported through the medium of a spider 1 1, on a'shaft 15 to which references will be presently made. Located adjacent theraised end oft-he screen is a hopper 16 for the material to be screened or sifted, this hopper having its discharge mouthturned into the open end of the member 10.- Fixed to this hopper, and extending longitudinally through which the cockleseeds, or other light material, drop after being carried up in the pockets formed. by the indentations 11. The lower end of this trough extends into a frusto-conical element 10Ffixed to the lower end of the member 1-0, the material being conveyed by this element 10 to a spout 17 I placed.

I vided with a discharge offshoot from cam element 7 here shown. as comprising .a

the mem-v ber 10 at a greater angle to the horizontal.

than the latter, is a chute or trough 17 on"permit of the same being Serial No. (175,983.

below which a suitable receptacle be; I The cleaned material falls through the screen intoa'semicylindrical receptacle 19 placed beneath themember .10 and;pro-.

spout 19.. To assist in the screening or sitting aetion I 'have provided;means whereby the screen is given a longitudinal reciprocatory motion;

to this end the hub 'of the K spider element 1% freely engagesthe-shaft- 1 5 and is shown as having a featherYcon-l as it revolves and nection withi thoshaft 15as at'14, this hub Q being extended in t which passes through a bearingstandard 13 and has fixed to its forward end afdisk-Y21 the form of a sleeve 20 70 carrying a pair of rollers 22 Fixed to an the said standard is a novel dislr24facing the disk 21 and having-hinged thereto as at 25 two pairs of cam arms, the

respective arms of eachpairbeing indicated at 26 and 27.21.1101- extending toward one another from their hinge ends." These arms are inclined with respect to the face of the dlsk so as to constitute-thecam-elements,

and have their free ends overlapping each other and curvedinward toward the face of i i the disk as shown. As will be understood, the face of the 'disk ,24t is suitably recessed to accommodate these arms. 4

tocnga-ge the said overlappedends'and form abutments for the arms, are screws 2,9,which may have lock nuts such as 30 thereon. Tension springs 31 which pass through suitable.

the amount of reciprocatory movement'im-- parted to the screen will be varied. Surrounding the sleeve element 20, and bearing between the standard 131 and the disk 21 is a coiled expansion spring 33 which acts to Threaded through the disk 24in position" move the screen in one direction. Upon the end of shaft 15 a for purposes ofrotation, apu lley 36 being also indicated as mounted on said shaft to power driven when desired.

It is believed that the manner of opera crankhandle 35'is placed tion and use of hi im roved screenin r and sifting, machine will be readily understoodv The material from the above description. to be cleaned is placed in the hopper 16,

whichis provided with a suitable control regulated to cause a material into the. member 10.- by ro' a. reciprooatory p 26,- 27 on therollers22, so that a thorough shaking and agitating of k P thermaterial isefliected as it travels along 1 1 the saiagmem ee.

, V .be made therein without departing twin-th spirit and-scopeof the, invention 1 thus *de'sc I claim. as new' and I While {Ihave illustrated and describeda V .15-' r'eferi*ed embodiment of my invention-it 1s to be understoodth'z'it Ido not limit myself:

* to the precise "eonstruction herein disclosed andt'h'at various changes and modifications l a's defined 'n the appended'claims; I

ribed my invention what desire to protect by LettersliPatentfof the'United States is as fol-.

A reciprocatingmeans for the rotary I druin-fofiafgrain sifterycomprising abear- -v trig-a sleevepassinggthroughsaid bearing,

a disk, fixed r to the forward end of said Qfsleev vrollers mounted onthe front face of A saiddishfastandard olfshot from said bearf tute c'ani'. elements,

v ia ',a disk fixedtosaidstandard, a pair'of' f'cani armshinged tosaid latter disk, said I, am aping extending towardsone another .35" from their hinge'l" ends,

inclined with redisk so as to constithe free ends of said cam arms overlapping, and curved inwards towards "the face .of the latter mentioned Spec-mo s facei'of the fdisk, adjusting screws threaded through said latter disk, "abutting said cam arms,

tension passing through apertures i the latof any desired type,

The lighter material will becarried" upward by the pockets 11 droprrtping on thetrough 17 "and being discharged Qfront the end ofthe member: 10.

anal freedom,

'ter disk, and having one end fixed to said disk, and the other to said cam arms to press the cam arms against the said ad ust1ng screws, a shaft passingthrough said sleeve,

and feathered thereto, allowing longitudinal I freedom, and acoiled expansion spring sur roundingsaid sleeve, and acting between the said bearing and the first mentioned disk fixed to, theforward end of said sleeve, said coiled expansion spring urging said sleeve and attached disk in one direction. I V

2.. A reciprocatin nieansjfor the; rotary drum of a grain sifter, comprising alb'earing, asleeve passmg disk fixedto theforward'endof said sleeve, rollers mounted on the front faceof-fl said disk ,-,a standard ofishot from said bearing, a disk fixed to said arms hinged to said latter disk, said cam arms extending towards one another from (their hinged ends,vinelin'ed with respect to standard, a pair of cam through said hearing",- a

the face of the disk so asto constitute camelements, the free ends. of saidcam arms overlapping, and curved inwards towards the face of. the latter mentioneddisk, adjusting screws threadedthrough said latter disk,- abutting engaged on' said adjusting screws, tension springs having one end fixed-t0 said latter disk, andthe other-to said cam arms topress the cam and feathered; thereto, allowing lon'gitudi said cama'rms, locking nuts V arms againstuthe said adjusting screws, a shaft passing through said sleeve,

and a coiled-expansionspring surrounding said sleeve, and acting between the said hearing and fixed to the forward end ofsaid sleeve, said coiled expansion spring urging said sleeve and attached disk in one. direction" 7 In testimony whereof I have affixed my signature. .7 y

the first mentioned disk ANDREW. MmoNUoK; 1' 

